Tag: Urinalysis

Phenazopyridine, an over-the-counter medication for urinary pain relief, is known to cause a harmless but dramatic reddish-orange discoloration of urine. However, this vibrant dye can significantly interfere with a urine test for UTI, potentially leading to inaccurate results on a standard dipstick test.

A single procedure may be known by a variety of names, including “drug test,” “substance abuse testing,” and “toxicology screen,” all of which describe the process of determining a person's drug usage. This article clarifies the common terminology and procedures related to the question, **what is a drug screening called?**

According to the FDA drug label, phenazopyridine can interfere with urinalysis based on color reactions and spectrometry, potentially leading to misleading results. This common over-the-counter medication, often used for urinary tract infection symptoms, can cause a false positive, complicating diagnosis if not properly disclosed.

Antidepressants are among the most commonly prescribed medications in the U.S., which often leads patients to question how their treatment might impact medical procedures, such as urinalysis. The short answer to whether **Lexapro affect urinalysis?** is that while the medication is detectable in urine, it typically does not interfere with standard drug screens designed to detect illicit substances.

According to research from Boston Medical Center, false positives can affect 5% to 10% of drug tests, revealing that a 'fail' result is not always straightforward and is determined by a complex interplay of pharmacological factors, procedural standards, and specimen integrity.

Caffeine is consumed daily by a vast majority of the population, leading many to wonder: does caffeine show up on a drug test? For most people, the answer provides a sigh of relief.

While the presence of a few hyaline casts in urine can be a normal finding, certain medications can significantly increase their numbers. A primary example of what drug causes hyaline casts involves diuretic therapy, which leads to concentrated urine and precipitates the protein that forms these casts.

According to the *British Journal of General Practice*, drug intake is a common yet often overlooked cause of sterile pyuria, a condition where leukocytes appear in the urine without a bacterial infection. Understanding **what medications cause leukocytes in urine** is crucial for proper diagnosis and management, as this can indicate a serious adverse drug reaction.

Over 100 different medications have been found to cause drug-induced autoimmune hemolytic anemia (AIHA), a condition that can lead to high urobilinogen [1.3.4]. This article explores what medications cause high urobilinogen and the underlying mechanisms.